Island



(No Model.)

G. A. METOALF.

SADDLE FOR TOP ROLLS 0F SPINNING MACHINES. No. 394,124. Patented Dec. 4,1888.

auozm UNITED STATES PATENT OFFICE.

GEORGE A. MEICALF, ()F \VOONSOCKET, RIIODE ISLAND, ASSIGNOR TO AMERI-(JL 'S \YELtll AND JOSEPH GILBERT, OI! LLACKSTONE, )lASSACIII SETTS, ANDJOSEPH J. IIYLl-lERT, HENRY S. TURNER, GEORGE M. 'ELLS, AND ISRAEL l3.PHILIPS, F \VOONSOCKET, RHODE ISLAND.

SADDLE FOR TOP ROLLS OF SPINNING-MACHINES.

SPECIFICATION forming part of Letters Patent No. 394,124,:1ated December4, 1888.

Application fi ed January 28, 1888. Serial No. 262,209. (No model.)Patented in England February 13, 1888, No 2,175 in France February 21,1888,1Ial83d375, and in Belgium February 22,1888,N0.80,'787.

To all whom, it may concern:

Be it known that I, GEORGE A. METCALF, a citizen of the United States,and a resident of \Yoonsocket, county of Providence, and State of RhodeIsland, have invented certain new and useful lm n'ovements in Saddlesfor Top Rolls of Spinning-Machincs, oi which the following is aspecification.

My invention relates to the saddles of top IO or drawil'ig rolls ofspinning-machines of that class for which I have received BritishLetters Patent- No. 2,175, dated February 13, l French Patent No.188,275, February 21, 188$, and Belgian Patent No. 80,737, llebruary 22,

I 5 1888; and it consists in providing such saddles with bearingblocksof plumbago, or

mainly of plumbag'o, projecting or arrangedto constitute the solebearing-faces for the journals of the top rolls, and also in provid- 2oing the said saddles with sockets to receive the said blocks and withopenings arranged to permit the ready withdrawal of said blocks whenthey have to be renewed, as fully set forth hereinafter, and asillustrated in the ac- 2 5 companying drawings, in which.

Figure 1 is a cross-section of a set of top rolls, showing the saddlesresting thereon. Fig. 2 is alongitudinal section of a saddle withsockets and recesses for the reception and ready 5o dislodgment of thelieai-iiig'dilocks. 1 i u;.3 is a transverse section on the line 1 2,Fig. 2. Fig. 4. is an inverted plan view of the saddle, Fig. 2.

I'Ieretofore where the saddle-beari nus for top rolls ofspinning-machines have been lubricated by means of oil or other fluid orsemifluid lubricating materials it has been found almost impossible toprevent the injury to the yarn by the spreading of theliil'iricant,which 40 also invariably finds its way to the surface ofthe rolls and injures the covering of the latter. These results and thedefects in the drawing which also result should the bearings become dry,as will occasionally happen, have caused many efforts to be made withthe view of securing a proper hearing without the use of a lubricant ofsuch a character as must be supupon the yarn.

plied from time to time, or which is capable of flowing to the rolls orof being deposited For instance, rawhide, in1 pregnated wood, metalbearings having recesses for lubricants, and various other means havebeen used or attempted to be used for such purposes; but, so far as I amaware, no bearing has yet been devised capable of pro longed use oravailable under heavy pressure without the employment of a removablelubricant, such as tallow, oil, powdered plumbago, or other substanceliable to injure the yarn or the rolls, or both. To overcome theseobjections, as well as to secure other advantages, I make theroll-bearing in the form of a hard block ot' plumbagro or plumbagocomposition secured to or supported by the saddle, with its faceprojectiire beyond the saddle in such manner as. to constitute the solebearing for the journal of the top roll.

An arrangement of rolls and saddles is shown in Fig. 1,in which A is thetop roll, having the usual covering, ll, of india-rubber or otherelastic material. C- is one of the saddles, provided at one end with abearing, I), nojecting beyond the face of the saddle and bearing uponthe journal (l of the top roll, while the opposite end of the saddle Cbears upon the top of the saddle C, having its bearings upon thejournals Z) r] of the rolls B B,

the saddle (1' also having plumbago blocks D inserted therein toconstitiite thc lieaffiig for the journals.

The blocks D are preferably of pluinbag'o cut to the proper shape andfitted in a recess or socket, 41', in the under side of the yoke, whichsocket extends nearly or completely across the yoke, so that practicallyno portion of the latter will constitute a bearingface or bear upon thejournal. in consequence of the wearing away of the bearing-block. Theseblocks may be circular, as shown at the right in Fig. 4, or oblong, asshown at the left in said figure.

As the blocks wear away it is necessary to replace them from time totime, and to avoid the necessity of removing the yokes from the machineand boring out the bearing-blocks I make perforations or openings yleading from the top of the yoke to each socket 00, through whichperforation a suitable tool may be introduced to drive the block D outof the socket.

The plumbago blocks have proved in practice to be capable of extendeduse without the employment of any other lubricating mate rial whatever.As the said blocks are hard and solid, they do not wear away like softcompositions, so as to produce a powder capable of injuring the yarn.They do not cut the journals, and can be readily inserted and re placedwhen wanted.

If desired, the blocks may be inserted in dovetailed sockets, as shownin connection with the saddles in Fig. l, in which case they may beremoved by driving them laterally from their sockets. I prefer, however,the

arrangement before described, an d illustrated in the other figures.

I claim 1. A saddle for the top roll of a spinningmachine, provided witha socket to which is adapted a detachable block of plumbago constitutingthe sole bearing of the top-roll jour nal, substantially as set forth.

2. The saddle for the top roll of a spinningmachine, provided with asocket holding a hard block of plumbago, and with a perforation, y, fromthe top of the saddle to the said socket, substantially as set forth.

In testimony whereof I have signed my name 7 to this specification inthe presence of two subscribing witnesses.

VGEORGE A. METCALF.

Witnesses:

CHARLES E. FOSTER, J. S. BARKER.

